Hello again everyone, and first of all thank you for answering all of my many questions!!! Now, I did a dip on my zoa polyp colony after I noticed a black spider looking thing on it the first day I brought it home. I looked it up and it looks like the zoa spiders but it was black, not tan or brown like all of the pictures I have found. Is is possible to have black zoa spiders? Or is this possibly something else? I have found a total of 3 so far, one from the dip and tweezered two more off over the last few days while carefully combing through my polyps like a mad woman lol.